We had to switch from CSV-with-semicolons-as-delimiters to
CSV-with-actual-commas-as-delimiters because Weka does not want to read the
former. I also manually recoded some of the data to UTF-8, so there may be some
weird characters in there still. I can still not figure out what encoding Excel
used when exporting the file...

Run the program, pick the menu alternatives. I get output similar to

CHOOSE METHOD WITH A NUMBER

1. Train data
2. Generate people
3. Exit

2
Observation(id=01801307, count=1, Gender=Male)
Observation(id=01801307, count=1, Gender=Male)
Observation(id=01801307, count=1, Gender=Male)
Observation(id=01801307, count=1, Gender=Female)
Observation(id=01801307, count=1, Gender=Female)
Observation(id=01801307, count=1, Gender=Male)
Observation(id=01801307, count=1, Gender=Male)
Observation(id=01801307, count=1, Gender=Male)
Observation(id=01801307, count=1, Gender=Female)
Observation(id=01801307, count=1, Gender=Male)

CHOOSE METHOD WITH A NUMBER

1. Train data
2. Generate people
3. Exit

1

Results

Correctly Classified Instances 40 100 %
Incorrectly Classified Instances 0 0 %
Kappa statistic 1
Mean absolute error 0.0358
Root mean squared error 0.0551
Relative absolute error 117.4501 %
Root relative squared error 153.8336 %
Total Number of Instances 40